# print(f"{}")

name = "张三"
age= "23"
height="171.6421462171"
print("你好:%s,年龄：%d, 身高:%.3f" % (name,23,13352.46))
print("你好:%s,年龄：%s, 身高:%s" % (name,age,height))

str2="我叫{0},今年{1}岁".format(name,23)
print(str2)